Json reference preservation

[mcownie]

hi, i have written a custom module and i am passing back a tree of objects via my controller
on deserialization in the client service i am getting duplicate entities

i.e. the intensity is being created as two separate instances

when it is in fact the same thing

so i had an initial play with setting ReferenceHandler = ReferenceHandler.Preserve on the json serialization, but it killed oqtane
is this something that can be enabled without extensive changes or is it architecturally a no-no ?